The theologian Reinhold Neibuhr oftentimes warned that moralists who entered the foreign policy sphere were likely to be more destructive of a nation's ideals than were cynical realists. Evidently he feared that those who lacked a sense of the limits of foreign policy would proceed as if the values and goods which were attainable in the more intimate communities of the family, the locality and the nation were attainable in the international community as well. Whatever Neibuhr's quarrels and debates with classical Greek thought, he was at one with Plato and Aristotle and their present day followers in believing that justice could be more effectively pursued by the smaller communities, such as the city states. He insisted on a recognition of the differences between such communities and the major present day world powers. From World War II until his death, he wrote more about foreign policy than any other aspect of public policy. He wrote scores of articles, some published in less prominent journals, about American foreign policy and its moral basis.
American Foreign Policy since World War II